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MECHANICAL ENGINEER TEST QUESTIONS

MECHANICAL ENGINEER TEST QUESTIONS

1. Which of the following features are not present in a BOXN Wagon
a) Air Brake
b) CASNUB Bogie
c) Covered wagon
d) Cartridge Roller Bearing

2. Pick out the odd designation
a) EDME
b) CRSE
c) CMPE
d) CWE

3. The eigenvalues of a symmetric matrix are all
(A) complex with non-zero positive imaginary part.
(B) complex with non-zero negative imaginary part.
(C) real.
(D) pure imaginary.
Mechanical Engineering Solved Question Paper-100 Questions

4 Two threaded bolts A and B of same material and length are subjected to identical tensile load. If
the elastic strain energy stored in bolt A is 4 times that of bolt B and the mean diameter of bolt A is
12 mm, the mean diameter of bolt B in mm is
(A) 16
(B) 24
(C) 36
(D) 48

5. The cost of a BOXN wagon is around
a) Rs. 10 lakhs
b) Rs. 15 lakhs
c) Rs.
20 lakhs
d) Rs. 25 lakhs

6 The pressure, dry bulb temperature and relative humidity of air in a room are 1 bar, 30°C and 70%,
respectively. If the saturated steam pressure at 30°C is 4.25 kPa, the specific humidity of the room
air in kg water vapour/kg dry air is
(A) 0.0083 
(B) 0.0101 
(C) 0.0191
(D) 0.0232 

7. Pick out the odd designation
a) EDME
b) MM
c) JDME
d) CME

8. In a rolling process, the state of stress of the material undergoing deformation is
(A) pure compression 
(B) pure shear
(C) compression and shear
 (D) tension and shear 

9. A metric thread of pitch 2 mm and thread angle 60° is inspected for its pitch diameter using 3-wire method. The diameter of the best size wire in mm is
(A) 0.866 
(B) 1.000 
(C) 1.154 
(D) 2.000
MECHANICAL ENGINEER TEST QUESTIONS



10. Which type of bogie is used in BOXN wagons ?
a) CASNUB
b) IR 20
c) BOBO
d) UIC

11. Customers arrive at a ticket counter at a rate of 50 per hr and tickets are issued in the order of their arrival. The average time taken for issuing a ticket is 1 min. Assuming that customer arrivals form a Poisson process and service times are exponentially distributed, the average waiting time in queue
in min is
(A) 3 
(B) 4 
(C) 5 
(D) 6

12.. ICF and RCF have a combined production capacity of
a) 500 coaches per year
b) 1000 coaches per year
c) 2000 coaches per year
d) 5000 coaches per year

13. In simple exponential smoothing forecasting, to give higher weightage to recent demand
information, the smoothing constant must be close to
(A) −1 
(B) zero 
(C) 0.5 
(D) 1.0

14. BKH wagon is
a) 4 wheeler vacuum braked wagon
b) 8 wheeler air braked wagon
c) 8 wheeler vacuum braked wagon
d) 4 wheeler air braked wagon

15. A cube shaped casting solidifies in 5 min. The solidification time in min for a cube of the same
material, which is 8 times heavier than the original casting, will be
(A) 10 
(B) 20 
(C) 24
(D) 40

Mechanical Engineering Solved Question Paper-100 Questions

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